Diversity Indices of Plant Communities and Their Rhizosphere Microbiomes: An Attempt to Find the Connection

Abstract

The rhizosphere community represents an “ecological interface” between plant and soil, providing the plant with a number of advantages. Despite close connection and mutual influence in this system, the knowledge about the connection of plant and rhizosphere diversity is still controversial. One of the most valuable factors of this uncertainty is a rough estimation of plant diversity. NGS sequencing can make the estimations of the plant community more precise than classical geobotanical methods. We investigate fallow and crop sites, which are similar in terms of environmental conditions and soil legacy, yet at the same time are significantly different in terms of plant diversity. We explored amplicons of both the plant root mass (ITS1 DNA) and the microbial communities (16S rDNA); determined alpha- and beta-diversity indices and their correlation, and performed differential abundance analysis. In the analysis, there is no correlation between the alpha-diversity indices of plants and the rhizosphere microbial communities. The beta-diversity between rhizosphere microbial communities and plant communities is highly correlated (R = 0.866, p = 0.01). ITS1 sequencing is effective for the description of plant root communities. There is a connection between rhizosphere communities and the composition of plants, but on the alpha-diversity level we found no correlation. In the future, the connection of alpha-diversities should be explored using ITS1 sequencing, even in more similar plant communities—for example, in different synusia.

Fine‐scale genetic structure in rhizosphere microbial communities associated with Chamaecrista fasciculata (Fabaceae)

“…Other studies have noted mixed results on the association between host plant diversity and overall diversity of microbes in their rhizospheres. For example, Zverev et al ( 2021 ) did not find a correlation between alpha diversity of plants and rhizosphere bacteria in farmed and fallow fields, but Singh et al ( 2022 ) reported that alpha diversity varied among rice cultivars. These studies suggest a complex interplay of factors likely determine the level of microbial diversity associated with plants, as well as the specific types of microbes present.…”

Microbial features of mature and abandoned soils in refractory clay deposits

“…Another reason could be plant-soil interaction. Different plant communities form specific rhizosphere communities [21] which leads to differences in soil microbial community. Differential taxonomic analysis in Q_R and pQ_R comparison reveals mostly common plant-associated bacterial genera, like previously described Aquispherae [22], Bradyrizobium [23] and Reyranella [24].…”

Liuwei Dihuang formula ameliorates chronic stress-induced emotional and cognitive impairments in mice by elevating hippocampal O-GlcNAc modification

“…To study microbial diversity in the environment, the richness and diversity of the microbial community can be reflected by Alpha diversity analysis ( Rogers et al, 2016 ; Zverev et al, 2021 ) in a single sample. Alpha diversity refers to the diversity in a specific region or ecosystem.…”